<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<p>
    <pre>
<h1>字符编码发展史</h1>
ASCII 255 1 bytes
1980 gb2312 7445
1995 GBK1.0 21886
2000 GB18030 27484
unicode 2bytes
utf-8 en:1byte, zh:3bytes
    </pre>
</p>
</body>
</html>